Most people falter on prepositions when they face a situation where they can’t decide between two (or even more) prepositions that both seem to be the correct answer. Few examples of such commonly-confused prepositions: (1) over and above; (2) at, in, and on. And there are plenty more.
Prepositions are best learnt when you learn them in groups of such commonly-confused prepositions and not as individual prepositions. After all, that’s where you make most mistakes.
In this post, you’ll learn prepositions in such groups – 17 of them covered here.